\documentclass[11pt,a4paper]{ctexart} 
\usepackage{graphicx} 
\usepackage{float}
\usepackage{geometry}
\usepackage{xcolor}
\usepackage{fancyhdr}
\usepackage{minted}
\usepackage{listings}
\usepackage[colorlinks,linkcolor=blue]{hyperref}
\geometry{left=2cm,right=2cm,top=3cm,bottom=2cm}
\pagestyle{fancy}
\lhead{\author}
\chead{\date}
\rhead{1 你好卢瑟}
\lfoot{}
\cfoot{\thepage}
\rfoot{}
\renewcommand{\headrulewidth}{0.2pt}
\renewcommand{\headwidth}{\textwidth}
\renewcommand{\footrulewidth}{0pt}

\title{卢瑟帝国宪法 }
\author{mq白}
\date{\today}

\begin{document}
\maketitle

\section{你好 卢瑟}

\input{tex/1.tex}

\section{如何做一名卢瑟？}

\input{tex/2.tex}

\section{如何成为一名高级卢瑟？}

\input{tex/3.tex}

\end{document}